White polypropylene woven scrim, 1.0 mil/1.0 mil average coating weight (Grey non-woven top/White bottom), total weight 2.7 oz./yd2 (92 g/m2) +/- 5%, and an overall thickness of 6 mil (ASTM D1777). Rolls have a 2” core, 48” (width) x 250’ (length) and weight approximately 20 lb. per roll.
- MD 75 lb. / CD 40 lb.
Trapezoidal Tear (ASTM 4533)
- MD 30 lb. / CD 25 lb.
Pass (maximum UV exposure 90 days)
Roofing Underlayments(ASTM D-226, Type I & II)
Roofing Underlayments(ASTM D-4689, Type I, II, III & IV)
Download Printable Documents
- GAP WaterGuard Product Technical Data Sheet GAP Synthetic Roofing Underlayment